LIGHT-EMITTING DEVICE AND METHOD FOR MANUFACTURING THE SAME, AND DISPLAY PANEL

    公开(公告)号:US20240397739A1

    公开(公告)日:2024-11-28

    申请号:US18694414

    申请日:2023-08-28

    Abstract: A light-emitting device comprises a first electrode, at least two light-emitting units and a second electrode which are sequentially stacked in a first direction. The at least two light-emitting units comprise a first light-emitting unit and a second light-emitting unit, the second light-emitting unit being located between the first light-emitting unit and the second electrode. At least one light-emitting unit comprises a light-emitting layer and an exciton blocking layer located on the side of the light-emitting layer close to the first electrode; the exciton blocking layer comprises a first sub-layer and a second sub-layer which are stacked in the first direction; the first sub-layer is located between the second sub-layer and the light-emitting layer; and in the first direction, the thickness of the first sub-layer is smaller than that of the second sub-layer, and the highest occupied molecular orbital energy level of the first sub-layer is higher than the highest occupied molecular orbital energy level of the second sub-layer. The light-emitting device provided by the present disclosure can enable exciton recombination regions of the light-emitting layer corresponding to each light-emitting unit to get close as much as possible, thereby improving light-emitting efficiency of the light-emitting device.

    ORGANIC ELECTROLUMINESCENT DEVICE, DISPLAY PANEL AND DISPLAY APPARATUS

    公开(公告)号:US20230269957A1

    公开(公告)日:2023-08-24

    申请号:US17921318

    申请日:2021-07-05

    CPC classification number: H10K50/16 H10K50/12 H10K50/18 H10K59/35 H10K2101/30

    Abstract: An organic electroluminescent device, a display panel and a display apparatus. The organic electroluminescent device comprises: an anode and a cathode, which are arranged opposite each other; an organic electroluminescent layer, which is located between the anode and the cathode; a hole blocking layer, which is located between the organic electroluminescent layer and the cathode; and an electron transport layer, which is located between the hole blocking layer and the cathode, wherein the organic electroluminescent layer comprises: an exciplex formed by means of mixing an electron-type light-emitting host material and a hole-type light-emitting host material, and a light-emitting guest material doped in the exciplex; and the electron mobility of the electron transport layer is greater than that of the hole blocking layer, and the electron mobility of the hole blocking layer is greater than that of the electron-type light-emitting host material.

    COLOR FILTER SUBSTRATE, METHOD FOR MANUFACTURING THE SAME AND DISPLAY DEVICE

    公开(公告)号:US20210223435A1

    公开(公告)日:2021-07-22

    申请号:US16957947

    申请日:2019-12-20

    Abstract: The present disclosure discloses a color filter substrate, a manufacture method thereof and a display device. The color filter substrate includes a substrate; and a light channel layer on a side of the substrate. The light channel layer includes a first photonic crystal layer and a second photonic crystal layer stacked with each other up and down. The light channel layer includes a plurality of light channel units formed by a periodic arrangement of three different primary-color light channel units. Each of the light channel units includes a photonic crystal block of the first photonic crystal layer and a photonic crystal block of the second photonic crystal layer with an orthographic projection of the photonic crystal block of the first photonic crystal layer on the substrate overlapping an orthographic projection of the photonic crystal block of the second photonic crystal layer on the substrate.

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